Podcast
Questions and Answers
How is electric current expressed?
How is electric current expressed?
- By the amount of charge flowing through a particular area in unit time (correct)
- By the length of the conductor
- By the temperature of the conductor
- By the color of the conductor
What is the function of a switch in an electric circuit?
What is the function of a switch in an electric circuit?
- It makes a conducting link between the cell and the bulb (correct)
- It decreases the resistance in the circuit
- It increases the flow of electric charges
- It stores electric charge temporarily
What happens to the electric current when a circuit is broken?
What happens to the electric current when a circuit is broken?
- The current increases rapidly
- The current stops flowing (correct)
- The current reverses direction
- The current becomes stronger
What provides the flow of charges in a torch to make the bulb glow?
What provides the flow of charges in a torch to make the bulb glow?
What constitutes an electric circuit?
What constitutes an electric circuit?
Flashcards
How is electric current expressed?
How is electric current expressed?
The amount of charge flowing through a specific area in a given time.
What is the function of a switch in a circuit?
What is the function of a switch in a circuit?
It creates a connection between the power source (cell) and the load (bulb), allowing current to flow.
What happens to electric current when a circuit is broken?
What happens to electric current when a circuit is broken?
The flow of charges stops.
What provides the flow of charges in a torch to make the bulb glow?
What provides the flow of charges in a torch to make the bulb glow?
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What constitutes an electric circuit?
What constitutes an electric circuit?
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Study Notes
Electric Circuits and Current
- Electric current is expressed in amperes (A), with 1 ampere equal to 1 coulomb per second.
The Role of Switches
- A switch in an electric circuit functions to control the flow of electric current by opening or closing the circuit.
Effects of a Broken Circuit
- When a circuit is broken, the electric current stops flowing.
Flow of Charges in a Torch
- The flow of charges in a torch is provided by a battery, which enables the bulb to glow.
Components of an Electric Circuit
- An electric circuit consists of a conductor, such as a wire, a source of voltage (e.g., a battery), and a device that uses the electric energy (e.g., a light bulb).
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Description
Test your knowledge of electric current and circuits with this quiz. Explore concepts such as conductors, flow of electric charge, and the role of cells and batteries in creating electric current.
